User equipments, base stations and methods for time domain correlation information reporting

ABSTRACT

Examples of user equipments (UEs) are described. A UE includes receiving circuitry configured to receive first information to configure one or more channel state information-reference signals (CSI-RS) for tracking and second information to configure time domain correlation related information. The UE also includes transmitting circuitry configured to transmit a channel state information (CSI) report including the time domain correlation related information. A first parameter trs-Info is included in the first information. A second parameter reportQuantity is not set to ‘none’. The time domain correlation related information is measured by the one or more CSI-RS for tracking.

TECHNICAL FIELD

The present disclosure relates generally to communication systems. Morespecifically, the present disclosure relates to user equipments, basestations and methods for user equipments, base stations and methods fortime domain correlation information reporting.

BACKGROUND

Wireless communication devices have become more powerful in order tomeet consumer needs and to improve portability and convenience.Consumers have become dependent upon wireless communication devices andhave come to expect reliable service, expanded areas of coverage andincreased functionality. A wireless communication system may providecommunication for a number of wireless communication devices, each ofwhich may be serviced by a base station. A base station may be a devicethat communicates with wireless communication devices.

As wireless communication devices have advanced, improvements incommunication capacity, speed, flexibility and/or efficiency have beensought. However, improving communication capacity, speed, flexibilityand/or efficiency may present certain problems.

For example, wireless communication devices may communicate with one ormore devices using a communication structure. However, the communicationstructure used may only offer limited flexibility and/or efficiency. Asillustrated by this discussion, systems and methods that improvecommunication flexibility and/or efficiency may be beneficial.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating one implementation of one or moregNBs and one or more UEs in which systems and methods for signaling maybe implemented;

FIG. 2 shows examples of multiple numerologies;

FIG. 3 is a diagram illustrating one example of a resource grid andresource block;

FIG. 4 shows examples of resource regions;

FIG. 5 illustrates an example of beamforming and quasi-colocation (QCL)type;

FIG. 6 illustrates an example of transmission configuration indication(TCI) states;

FIG. 7 is a flow diagram illustrating an example of a method inaccordance with some of the techniques described herein;

FIG. 8 is a flow diagram illustrating an example of a method inaccordance with some of the techniques described herein;

FIG. 9A is a flow diagram illustrating an example of a method inaccordance with some of the techniques described herein;

FIG. 9B is a flow diagram illustrating an example of a method inaccordance with some of the techniques described herein;

FIG. 10 illustrates various components that may be utilized in a UE;

FIG. 11 illustrates various components that may be utilized in a gNB;

FIG. 12 is a block diagram illustrating one implementation of a UE inwhich one or more of the systems and/or methods described herein may beimplemented;

FIG. 13 is a block diagram illustrating one implementation of a gNB inwhich one or more of the systems and/or methods described herein may beimplemented;

FIG. 14 is a block diagram illustrating one implementation of a gNB; and

FIG. 15 is a block diagram illustrating one implementation of a UE.

DETAILED DESCRIPTION

A user equipment (UE) is described. The UE includes receiving circuitryconfigured to receive first information to configure one or more channelstate information-reference signals (CSI-RS) for tracking and secondinformation to configure time domain correlation related information.The UE also includes transmitting circuitry configured to transmit achannel state information (CSI) report including the time domaincorrelation related information. A first parameter trs-Info is includedin the first information. A second parameter reportQuantity is not setto ‘none’. The time domain correlation related information is measuredby the one or more CSI-RS for tracking.

A base station is also described. The base station includes transmittingcircuitry configured to transmit first information to configure one ormore CSI-RS for tracking and second information to configure time domaincorrelation related information. The base station also includesreceiving circuitry configured to receive a CSI report including thetime domain correlation related information. A first parameter trs-Infois included in the first information. A second parameter reportQuantityis not set to ‘none’. The time domain correlation related information ismeasured by the one or more CSI-RS for tracking.

A communication method of a UE is also described. The method includesreceiving first information to configure one or more CSI-RS for trackingand second information to configure time domain correlation relatedinformation. The method also includes transmitting a CSI reportincluding the time domain correlation related information. A firstparameter trs-Info is included in the first information. A secondparameter reportQuantity is not set to ‘none’. The time domaincorrelation related information is measured by the one or more CSI-RSfor tracking.

A communication method of a base station apparatus is also described.The method includes transmitting first information to configure one ormore CSI-RS for tracking and second information to configure time domaincorrelation related information. The method also includes receiving aCSI report including the time domain correlation related information. Afirst parameter trs-Info is included in the first information. A secondparameter reportQuantity is not set to ‘none’. The time domaincorrelation related information is measured by the one or more CSI-RSfor tracking.

Another UE is described. The UE includes receiving circuitry configuredto receive first information to configure one or more CSI-RS fortracking and second information to configure time domain correlationrelated information. The UE also includes transmitting circuitryconfigured to transmit a CSI report including the time domaincorrelation related information. A first parameter trs-Info is includedin the first information. A second parameter indicates one of a periodicCSI report, semi-persistent CSI report, and aperiodic CSI report. Thetime domain correlation related information is measured by the one ormore CSI-RS for tracking. The CSI report including the time domaincorrelation related information is transmitted based on the secondparameter.

Another base station is described. The base station includestransmitting circuitry configured to transmit first information toconfigure one or more CSI-RS for tracking and second information toconfigure time domain correlation related information. The base stationalso includes receiving circuitry configured to receive a CSI reportincluding the time domain correlation related information. A firstparameter trs-Info is included in the first information. A secondparameter indicates one of a periodic CSI report, semi-persistent CSIreport, and aperiodic CSI report. The time domain correlation relatedinformation is measured by the one or more CSI-RS for tracking. The CSIreport including the time domain correlation related information isreceived based on the second parameter.

Another communication method of a UE is described. The method includesreceiving first information to configure one or more CSI-RS for trackingand second information to configure time domain correlation relatedinformation. The method also includes transmitting a CSI reportincluding the time domain correlation related information. A firstparameter trs-Info is included in the first information. A secondparameter indicates one of a periodic CSI report, semi-persistent CSIreport, and aperiodic CSI report. The time domain correlation relatedinformation is measured by the one or more CSI-RS for tracking. The CSIreport including the time domain correlation related information istransmitted based on the second parameter.

Another communication method of a base station apparatus is alsodescribed. The method includes transmitting first information toconfigure one or more CSI-RS for tracking and second information toconfigure time domain correlation related information. The method alsoincludes receiving a CSI report including the time domain correlationrelated information. A first parameter trs-Info is included in the firstinformation. A second parameter indicates one of a periodic CSI report,semi-persistent CSI report, and aperiodic CSI report. The time domaincorrelation related information is measured by the one or more CSI-RSfor tracking. The CSI report including the time domain correlationrelated information is received based on the second parameter.

The 3rd Generation Partnership Project, also referred to as “3GPP,” is acollaboration agreement that aims to define globally applicabletechnical specifications and technical reports for third and fourthgeneration wireless communication systems. The 3GPP may definespecifications for next generation mobile networks, systems and devices.

3GPP Long Term Evolution (LTE) is the name given to a project to improvethe Universal Mobile Telecommunications System (UMTS) mobile phone ordevice standard to cope with future requirements. In one aspect, UMTShas been modified to provide support and specification for the EvolvedUniversal Terrestrial Radio Access (E-UTRA) and Evolved UniversalTerrestrial Radio Access Network (E-UTRAN).

At least some aspects of the systems and methods disclosed herein may bedescribed in relation to the 3GPP LTE, LTE-Advanced (LTE-A),LTE-Advanced Pro and other standards (e.g., 3GPP Releases 8, 9, 10, 11,12, 13, 14, 15, 16, 17 and/or 18). However, the scope of the presentdisclosure should not be limited in this regard. At least some aspectsof the systems and methods disclosed herein may be utilized in othertypes of wireless communication systems.

A wireless communication device may be an electronic device used tocommunicate voice and/or data to a base station, which in turn maycommunicate with a network of devices (e.g., public switched telephonenetwork (PSTN), the Internet, etc.). In describing systems and methodsherein, a wireless communication device may alternatively be referred toas a mobile station, a UE, an access terminal, a subscriber station, amobile terminal, a remote station, a user terminal, a terminal, asubscriber unit, a mobile device, etc. Examples of wirelesscommunication devices include cellular phones, smart phones, personaldigital assistants (PDAs), laptop computers, netbooks, e-readers,wireless modems, etc. In 3GPP specifications, a wireless communicationdevice is typically referred to as a UE. However, as the scope of thepresent disclosure should not be limited to the 3GPP standards, theterms “UE” and “wireless communication device” may be usedinterchangeably herein to mean the more general term “wirelesscommunication device.” A UE may also be more generally referred to as aterminal device.

In 3GPP specifications, a base station is typically referred to as aNode B, an evolved Node B (eNB), a home enhanced or evolved Node B(HeNB), a g Node B (gNB) or some other similar terminology. As the scopeof the disclosure should not be limited to 3GPP standards, the terms“base station,” “Node B,” “eNB,” “gNB” and “HeNB” may be usedinterchangeably herein to mean the more general term “base station.”Furthermore, the term “base station” may be used to denote an accesspoint. An access point may be an electronic device that provides accessto a network (e.g., Local Area Network (LAN), the Internet, etc.) forwireless communication devices. The term “communication device” may beused to denote both a wireless communication device and/or a basestation. A gNB may also be more generally referred to as a base stationdevice.

It should be noted that as used herein, a “cell” may be anycommunication channel that is specified by standardization or regulatorybodies to be used for International Mobile Telecommunications-Advanced(IMT-Advanced) or IMT-2020, and all of it or a subset of it may beadopted by 3GPP as licensed bands or unlicensed bands (e.g., frequencybands) to be used for communication between an eNB or gNB and a UE. Itshould also be noted that in E-UTRA and E-UTRAN overall description, asused herein, a “cell” may be defined as “combination of downlink andoptionally uplink resources.” The linking between the carrier frequencyof the downlink resources and the carrier frequency of the uplinkresources may be indicated in the system information transmitted on thedownlink resources.

The 5th generation communication systems, dubbed NR (New Radiotechnologies) by 3GPP, envision the use of time/frequency/spaceresources to allow for services, such as eMBB (enhanced MobileBroad-Band) transmission, URLLC (Ultra Reliable and Low LatencyCommunication) transmission, and mMTC (massive Machine TypeCommunication) transmission. And, in NR, transmissions for differentservices may be specified (e.g., configured) for one or more bandwidthparts (BWPs) in a serving cell and/or for one or more serving cells. Auser equipment (UE) may receive a downlink signal(s) and/or transmit anuplink signal(s) in the BWP(s) of one or more serving cells.

In order for the services to use the time, frequency, and/or spatialresources efficiently, it would be useful to be able to efficientlycontrol downlink and/or uplink transmissions. Therefore, a procedure forefficient control of downlink and/or uplink transmissions should bedesigned. Accordingly, a detailed design of a procedure for downlinkand/or uplink transmissions may be beneficial.

In some examples, UCI for URLLC may have higher reliability and lowerlatency than eMBB. Some examples of the techniques described herein mayachieve the lower latency in mini-slot repetition by using an earliestDMRS satisfying timing equal to or greater than the indicated timing inrepeated PUSCH.

Various examples of the systems and methods disclosed herein are nowdescribed with reference to the Figures, where like reference numbersmay indicate functionally similar elements. The systems and methods asgenerally described and illustrated in the Figures herein could bearranged and designed in a wide variety of different implementations.Thus, the following more detailed description of severalimplementations, as represented in the Figures, is not intended to limitscope, as claimed, but is merely representative of the systems andmethods.

FIG. 1 is a block diagram illustrating one implementation of one or moregNBs 160 and one or more UEs 102 in which systems and methods forsignaling may be implemented. The one or more UEs 102 communicate withone or more gNBs 160 using one or more physical antennas 122 a-n. Forexample, a UE 102 transmits electromagnetic signals to the gNB 160 andreceives electromagnetic signals from the gNB 160 using the one or morephysical antennas 122 a-n. The gNB 160 communicates with the UE 102using one or more physical antennas 180 a-n. In some implementations,the term “base station,” “eNB,” and/or “gNB” may refer to and/or may bereplaced by the term “Transmission Reception Point (TRP).” For example,the gNB 160 described in connection with FIG. 1 may be a TRP in someimplementations.

The UE 102 and the gNB 160 may use one or more channels and/or one ormore signals 119, 121 to communicate with each other. For example, theUE 102 may transmit information or data to the gNB 160 using one or moreuplink channels 121. Examples of uplink channels 121 include a physicalshared channel (e.g., PUSCH (physical uplink shared channel)) and/or aphysical control channel (e.g., PUCCH (physical uplink controlchannel)), etc. The one or more gNBs 160 may also transmit informationor data to the one or more UEs 102 using one or more downlink channels119, for instance. Examples of downlink channels 119 include a physicalshared channel (e.g., PDSCH (physical downlink shared channel) and/or aphysical control channel (PDCCH (physical downlink control channel)),etc. Other kinds of channels and/or signals may be used.

Each of the one or more UEs 102 may include one or more transceivers118, one or more demodulators 114, one or more decoders 108, one or moreencoders 150, one or more modulators 154, a data buffer 104 and a UEoperations module 124. For example, one or more reception and/ortransmission paths may be implemented in the UE 102. For convenience,only a single transceiver 118, decoder 108, demodulator 114, encoder 150and modulator 154 are illustrated in the UE 102, though multipleparallel elements (e.g., transceivers 118, decoders 108, demodulators114, encoders 150 and modulators 154) may be implemented.

The transceiver 118 may include one or more receivers 120 and one ormore transmitters 158. The one or more receivers 120 may receive signalsfrom the gNB 160 using one or more antennas 122 a-n. For example, thereceiver 120 may receive and downconvert signals to produce one or morereceived signals 116. The one or more received signals 116 may beprovided to a demodulator 114. The one or more transmitters 158 maytransmit signals to the gNB 160 using one or more physical antennas 122a-n. For example, the one or more transmitters 158 may upconvert andtransmit one or more modulated signals 156.

The demodulator 114 may demodulate the one or more received signals 116to produce one or more demodulated signals 112. The one or moredemodulated signals 112 may be provided to the decoder 108. The UE 102may use the decoder 108 to decode signals. The decoder 108 may producedecoded signals 110, which may include a UE-decoded signal 106 (alsoreferred to as a first UE-decoded signal 106). For example, the firstUE-decoded signal 106 may comprise received payload data, which may bestored in a data buffer 104. Another signal included in the decodedsignals 110 (also referred to as a second UE-decoded signal 110) maycomprise overhead data and/or control data. For example, the secondUE-decoded signal 110 may provide data that may be used by the UEoperations module 124 to perform one or more operations.

In general, the UE operations module 124 may enable the UE 102 tocommunicate with the one or more gNBs 160. The UE operations module 124may include one or more of a UE scheduling module 126.

The UE scheduling module 126 may perform (e.g., schedule) downlinkreception(s) and uplink transmission(s). The downlink reception(s)include reception of data, reception of downlink control information,and/or reception of downlink reference signals. Also, the uplinktransmissions include transmission of data, transmission of uplinkcontrol information, and/or transmission of uplink reference signals.

Also, in a carrier aggregation (CA), the gNB 160 and the UE 102 maycommunicate with each other using one or more serving cells. Here theone or more serving cells may include one primary cell and one or moresecondary cells. For example, the gNB 160 may transmit, by using the RRCmessage, information used for configuring one or more secondary cells toform together with the primary cell a set of serving cells. Namely, theset of serving cells may include one primary cell and one or moresecondary cells. Here, the primary cell may be always activated. Also,the gNB 160 may activate one or more secondary cell within theconfigured secondary cells. Here, in the downlink, a carriercorresponding to the primary cell may be the downlink primary componentcarrier (i.e., the DL PCC), and a carrier corresponding to a secondarycell may be the downlink secondary component carrier (i.e., the DL SCC).Also, in the uplink, a carrier corresponding to the primary cell may bethe uplink primary component carrier (i.e., the UL PCC), and a carriercorresponding to the secondary cell may be the uplink secondarycomponent carrier (i.e., the UL SCC).

In a radio communication system, physical channels (uplink physicalchannels and/or downlink physical channels) may be defined. The physicalchannels (uplink physical channels and/or downlink physical channels)may be used for transmitting information that is delivered from a higherlayer.

In some examples, in uplink, a Physical Random Access Channel (PRACH)may be defined. In some approaches, the PRACH (e.g., the random accessprocedure) may be used for an initial access connection establishmentprocedure, a handover procedure, a connection re-establishment, a timingadjustment (e.g., a synchronization for an uplink transmission, for ULsynchronization) and/or for requesting an uplink shared channel (UL-SCH)resource (e.g., the uplink physical shared channel (PSCH) (e.g., PUSCH)resource).

In some examples, a physical uplink control channel (PUCCH) may bedefined. The PUCCH may be used for transmitting uplink controlinformation (UCI). The UCI may include hybrid automatic repeatrequest-acknowledgement (HARQ-ACK), channel state information (CSI)and/or a scheduling request (SR). The HARQ-ACK is used for indicating apositive acknowledgement (ACK) or a negative acknowledgment (NACK) fordownlink data (e.g., Transport block(s), Medium Access Control ProtocolData Unit (MAC PDU) and/or Downlink Shared Channel (DL-SCH)). The CSI isused for indicating state of downlink channel (e.g., a downlinksignal(s)). Also, the SR is used for requesting resources of uplink data(e.g., Transport block(s), MAC PDU and/or Uplink Shared Channel(UL-SCH)).

Here, the DL-SCH and/or the UL-SCH may be a transport channel that isused in the MAC layer. Also, a transport block(s) (TB(s)) and/or a MACPDU may be defined as a unit(s) of the transport channel used in the MAClayer. The transport block may be defined as a unit of data deliveredfrom the MAC layer to the physical layer. The MAC layer may deliver thetransport block to the physical layer (e.g., the MAC layer delivers thedata as the transport block to the physical layer). In the physicallayer, the transport block may be mapped to one or more codewords.

In downlink, a physical downlink control channel (PDCCH) may be defined.The PDCCH may be used for transmitting downlink control information(DCI). Here, more than one DCI formats may be defined for DCItransmission on the PDCCH. Namely, fields may be defined in the DCIformat(s), and the fields are mapped to the information bits (e.g., DCIbits).

Additionally or alternatively, a physical downlink shared channel(PDSCH) and a physical uplink shared channel (PUSCH) may be defined. Forexample, in a case that the PDSCH (e.g., the PDSCH resource) isscheduled by using the DCI format(s) for the downlink, the UE 102 mayreceive the downlink data, on the scheduled PDSCH (e.g., the PDSCHresource). Additionally or alternatively, in a case that the PUSCH(e.g., the PUSCH resource) is scheduled by using the DCI format(s) forthe uplink, the UE 102 transmits the uplink data, on the scheduled PUSCH(e.g., the PUSCH resource). For example, the PDSCH may be used totransmit the downlink data (e.g., DL-SCH(s), a downlink transportblock(s)). Additionally or alternatively, the PUSCH may be used totransmit the uplink data (e.g., UL-SCH(s), an uplink transportblock(s)).

Furthermore, the PDSCH and/or the PUSCH may be used to transmitinformation of a higher layer (e.g., a radio resource control (RRC))layer, and/or a MAC layer). For example, the PDSCH (e.g., from the gNB160 to the UE 102) and/or the PUSCH (e.g., from the UE 102 to the gNB160) may be used to transmit a RRC message (a RRC signal). Additionallyor alternatively, the PDSCH (e.g., from the gNB 160 to the UE 102)and/or the PUSCH (e.g., from the UE 102 to the gNB 160) may be used totransmit a MAC control element (a MAC CE). Here, the RRC message and/orthe MAC CE are also referred to as a higher layer signal.

In some approaches, a physical broadcast channel (PBCH) may be defined.For example, the PBCH may be used for broadcasting the MIB (masterinformation block). Here, system information may be divided into the MIBand a number of SIB(s) (system information block(s)). For example, theMIB may be used for carrying include minimum system information.Additionally or alternatively, the SIB(s) may be used for carryingsystem information messages.

In some approaches, in downlink, synchronization signals (SSs) may bedefined. The SS may be used for acquiring time and/or frequencysynchronization with a cell. Additionally or alternatively, the SS maybe used for detecting a physical layer cell ID of the cell. SSs mayinclude a primary SS and a secondary SS.

An SS/PBCH block may be defined as a set of a primary SS, a secondary SSand a PBCH. Tin the time domain, the SS/PBCH block may include 4 OFDMsymbols, numbered in increasing order from 0 to 3 within the SS/PBCHblock, where PSS, SSS, and PBCH with associated demodulation referencesignal (DMRS) are mapped to symbols. One or more SS/PBCH block may bemapped within a certain time duration (e.g., 5 msec).

Additionally, the SS/PBCH block can be used for beam measurement, radioresource management (RRM) measurement and radio link control (RLM)measurement. Specifically, the secondary synchronization signal (SSS)can be used for the measurement.

In the radio communication for uplink, UL RS(s) may be used as uplinkphysical signal(s). Additionally or alternatively, in the radiocommunication for downlink, DL RS(s) may be used as downlink physicalsignal(s). The uplink physical signal(s) and/or the downlink physicalsignal(s) may not be used to transmit information that is provided fromthe higher layer, but may be used by a physical layer.

Here, the downlink physical channel(s) and/or the downlink physicalsignal(s) described herein may be assumed to be included in a downlinksignal (e.g., a DL signal(s)) in some implementations for the sake ofsimple descriptions. Additionally or alternatively, the uplink physicalchannel(s) and/or the uplink physical signal(s) described herein may beassumed to be included in an uplink signal (i.e. an UL signal(s)) insome implementations for the sake of simple descriptions.

Some techniques for CSI-RS for tracking and time domain correlationand/or Doppler information reporting are described as follows. A UE 102may be configured with NZP CSI-RS for tracking. The UE 102 may receiveinformation of one or more NZP CSI-RS resource sets(NZP-CSI-RS-ResourceSet) in a RRC message. Each NZP CSI-RS resource setmay include information to configure one or more NZP CSI-RS resources(NZP-CSI-RS-Resource).

A UE 102 may be configured with one or more CSI reportingconfiguration(s). For this purpose, the UE 102 may receive informationincluding one or more CSI report configuration(s) in a RRC message. EachCSI report configuration (CSI-ReportConfig) may include information onCSI-RS resources to perform channel measurement, information on CSI-RSresources for interference measurement, a parameter ReportQuantity,which kind of CSI (e.g., L1-RSRP (Layer-1 Reference Signal ReceptionPower), PMI (Precoding Matrix Indicator), CQI (Channel QualityIndicator), RI (Rank Indicator), CRI (CSI-RS resource indicator), and/orLI (layer indicator)) is reported by the corresponding CSI reportconfiguration, and a parameter reportConfigType which indicates one ofaperiodic CSI reporting, semi-persistent CSI reporting, and/or periodicCSI reporting.

A UE 102 in RRC connected mode may be expected to receive the higherlayer UE specific configuration of a NZP-CSI-RS-ResourceSet configuredwith higher layer parameter trs-Info. For a NZP-CSI-RS-ResourceSetconfigured with the higher layer parameter trs-Info, the UE 102 mayassume the antenna port with the same port index of the configured NZPCSI-RS resources in the NZP-CSI-RS-ResourceSet is the same.

For frequency range 1 (e.g., sub-6 GHz), the UE 102 may be configuredwith one or more NZP-CSI-RS resource set(s), where a parameterNZP-CSI-RS-ResourceSet may include four periodic NZP CSI-RS resources intwo consecutive slots with two periodic NZP CSI-RS resources in eachslot. If no two consecutive slots are indicated as downlink slots, bytdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigDedicated, then the UE102 may be configured with one or more NZP CSI-RS set(s), where aNZP-CSI-RS-ResourceSet may include two periodic NZP CSI-RS resources inone slot.

For frequency range 2, the UE 102 may be configured with one or more NZPCSI-RS set(s), where a NZP-CSI-RS-ResourceSet may include two periodicCSI-RS resources in one slot or with a NZP-CSI-RS-ResourceSet of fourperiodic NZP CSI-RS resources in two consecutive slots with two periodicNZP CSI-RS resources in each slot.

A UE 102 configured with NZP-CSI-RS-ResourceSet(s) configured withhigher layer parameter trs-Info may have the NZP CSI-RS resourcesconfigured as periodic, with the CSI-RS resources in the parameterNZP-CSI-RS-ResourceSet configured with same periodicity, bandwidth, andsubcarrier location.

A UE 102 configured with NZP-CSI-RS-ResourceSet(s) configured withhigher layer parameter trs-Info may have the NZP CSI-RS resourcesconfigured as periodic CSI-RS resource in one set and aperiodic CSI-RSresources in a second set, with the aperiodic CSI-RS and periodic CSI-RSresource having the same bandwidth (with same RB location) and theaperiodic CSI-RS being configured with qcl-Type set to ‘typeA’ and‘typeD’, where applicable, with the periodic CSI-RS resources. Forfrequency range 2, the UE does not expect that the scheduling offsetbetween the last symbol of the PDCCH carrying the triggering DCI and thefirst symbol of the aperiodic CSI-RS resources is smaller thanbeamSwitchTiming+d·2^(μCSIRS)/2^(μPDCCH) in CSI-RS symbols, where thehigher layer parameter beamSwitchTiming is a UE reported value, thereported value may be one of the values of {14, 28, 48}, and the beamswitching timing delay may be d if μ_(PDCCH)<μ_(CSIRS), else d may bezero. The UE 102 may expect that the periodic CSI-RS resource set andaperiodic CSI-RS resource set are configured with the same number ofCSI-RS resources and with the same number of CSI-RS resources in a slot.For the aperiodic CSI-RS resource set if triggered, and if theassociated periodic CSI-RS resource set is configured with four periodicCSI-RS resources with two consecutive slots with two periodic CSI-RSresources in each slot, the higher layer parameteraperiodicTriggeringOffset may indicate the triggering offset for thefirst slot for the first two CSI-RS resources in the set.

A UE 102 may not expect to be configured with a CSI-ReportConfig that islinked to a CSI-ResourceConfig containing an NZP-CSI-RS-ResourceSetconfigured with trs-Info and with the CSI-ReportConfig configured withthe higher layer parameter timeRestrictionForChannelMeasurements set to‘configured’.

A UE 102 may not expect to be configured with a NZP-CSI-RS-ResourceSetconfigured both with trs-Info and repetition.

If a UE 102 is configured with a CSI-ReportConfig with the higher layerparameter reportQuantity set to ‘none’ for aperiodic NZP CSI-RS resourceset configured with trs-Info, the UE 102 may receive the NZP CSI-RS fortracking and perform time and frequency channel tracking.

Some examples of techniques for CSI-RS for tracking and time domaincorrelation and/or Doppler information reporting are provided asfollows. A UE 102 may be configured with aperiodic CSI-RS for trackingin a NZP-CSI-RS resource set configured with trs-Info. A UE 102 may beconfigured with semi-static CSI-RS for tracking in a NZP-CSI-RS resourceset configured with trs-Info. A UE 102 may be configured with periodicCSI-RS for tracking in a NZP-CSI-RS resource set configured withtrs-Info.

A UE 102 may be configured with a CSI-ReportConfig for periodic NZPCSI-RS resource set configured with trs-Info.

If a UE 102 is not configured with a CSI-ReportConfig for periodic NZPCSI-RS resource set configured with trs-Info, the UE 102 may receive theNZP CSI-RS for tracking and perform time and frequency channel tracking.

A UE 102 may be configured with a CSI-ReportConfig for semi-persistentNZP CSI-RS resource set configured with trs-Info. If a semi-persistentNZP CSI-RS resource set configured with trs-Info is configured, the UE102 may be configured with a CSI-ReportConfig and a parameterreportQuantity in the CSI-ReportConfig is set to ‘TDCI’.

If a UE 102 is configured with a CSI-ReportConfig with the higher layerparameter reportQuantity set to a parameter other than ‘none’ (e.g.,TDCI: Time domain correlation related information), the UE 102 mayreceive CSI-RS for tracking, perform time and frequency channeltracking, and measure the time domain correlation related information.The UE 102 may transmit time domain correlation information based on themeasurement of CSI-RS for tracking. One or more of the followinginformation as TDCI may be defined:

-   -   Information about time domain correlation values measured from        multiple received CSI-RSs for tracking in a different        time-domain transmission/reception occasion;    -   Information about the differential values between reception        power between the received CSI-RSs for tracking in a different        time-domain transmission/reception occasion;    -   Information about the differential values between signal to        interference plus noise power ratio (SINR) between the received        CSI-RSs for tracking in a different time-domain        transmission/reception occasion;    -   Information about the phase rotation values between the received        CSI-RSs for tracking in a different time-domain        transmission/reception occasion.

In some examples, each CSI-RS resource may be configured by the higherlayer parameter NZP-CSI-RS-Resource with one or more of the followingrestrictions:

-   -   the time-domain locations of the two CSI-RS resources in a slot,        or of the four CSI-RS resources in two consecutive slots (which        are the same across two consecutive slots), as defined by higher        layer parameter CSI-RS-resourceMapping, may be given by one of        -   l∈{4,8}, l∈{5,9}, and/or l∈{6,10} for frequency range 1 (sub            6 GHz) and frequency range 2 (above 6 GHz), and/or        -   l∈{0,4}, l∈{1,5}, l∈{2,6}, l∈{3,7}, l∈{7,11}, l∈{8,12},            and/or l∈{9,13} for frequency range 2 (above 6 GHz).    -   a single port CSI-RS resource with density ρ=3 given by Table        7.4.1.5.3-1 from TS 38.211 and higher layer parameter density        configured by CSI-RS-ResourceMapping.    -   If carrier N_(grid) ^(size,μ)=52, N_(BWP,i) ^(size)=52, μ=0 and        the carrier is configured in paired spectrum, the bandwidth of        the CSI-RS resource, as given by the higher layer parameter        freqBand configured by CSI-RS-ResourceMapping, may be X resource        blocks, where X≥28 resources if the UE indicates trs-AddBw-Set1        for trs-AdditionalBandwith capability and X≥32 if the UE        indicates trs-AddBW-Set2 for the AdditionalBandwidth capability;        in these cases, if the UE is configured with CSI-RS comprising        X<52 resource blocks, the UE 102 may not expect that the total        number of PRBs allocated for DL transmissions but not overlapped        with the PRBs carrying CSI-RS for tracking is more than 4, where        all CSI-RS resource configurations may span the same set of        resource blocks; otherwise, the bandwidth of the CSI-RS        resource, as given by the higher layer parameter freqBand        configured by CSI-RS-ResourceMapping, is the minimum of 52 and        N_(BPW,i) ^(size) resource blocks, or is equal to N_(BPW,i)        ^(size) resource blocks. For operation with shared spectrum        channel access, freqBand configured by CSI-RS-ResourceMapping,        is the minimum of 48 and N_(BPW,i) ^(size) resource blocks, or        is equal to N_(BPW,i) ^(size) resource blocks.    -   the UE 102 may not be expected to be configured with the        periodicity of 2^(μ)×10 slots if the bandwidth of CSI-RS        resource is larger than 52 resource blocks.    -   the periodicity and slot offset for periodic NZP CSI-RS        resources, as given by the higher layer parameter        periodicityAndOffset configured by NZP-CSI-RS-Resource, may be        one of 2^(μ)X_(p) slots where X_(p)=10, 20, 40, or 80 and where        p may be defined in Clause 4.3 of TS 38.211.

Additionally or alternatively, a UE 102 may measure time domaincorrelation by using CSI-RS for tracking associated with the parameterNZP-CSI-RS-ResourceSet(s) configured with a parameter trs-Info andassociated with the parameter CSI-Report-Config(s) configured withreportQuantity as TDCI.

Additionally or alternatively, a UE 102 may measure time domaincorrelation by using CSI-RS for tracking associated with the parameterNZP-CSI-RS-ResourceSet(s) configured with a parameter trs-Info andassociated with the parameter CSI-Report-Config(s) configured withreportQuantity as ‘none’ and TDCI.

Additionally or alternatively, the parameter reportQuantity set to‘TDCI’ may be configured separately from other CSI components (e.g.,PMI, CQI, RI, LI, and/or CRI). The parameter reportQuantity set to‘TDCI’ may be configured with other CSI components (e.g., PMI, CQI, RI,LI, and/or CRI). In this case, the reportQuantity may be set to anotherparameter name (e.g., ‘TDCI-PMI-CQI-RI’ in case that CQI, PMI, RI, andTDCI are reported.

Additionally or alternatively, a UE 102 may be configured with timedomain prediction from CSI-RSs for tracking by information provided by aRRC message and reflect the time domain correlation to the reported CSIsuch as CQI, PMI, RI, LI, and/or CRI. In this case, the parameterreportQuantity in the parameter CSI-ReportConfig associated with CSI-RSfor tracking configured by the parameter NZP-CSI-RS-ResourceSet(s)configured with a parameter trs-Info may be set ‘none’. Additionally oralternatively, the parameter reportQuantity in the parameterCSI-ReportConfig associated with CSI-RS for tracking configured by theparameter NZP-CSI-RS-ResourceSet(s) configured with a parameter trs-Infomay be set TDCI.

Additionally or alternatively, a UE 102 may transmit UE capabilityinformation to support a time domain correlation related informationmeasurement. The UE capability may include the maximum number ofsimultaneous calculation(s) with other CSI components (e.g., L1-RSRP,PMI, CQI, RI, LI, and/or CRI). The UE capability may be defined per eachcomponent carrier, each cell, and/or each band.

Additionally or alternatively, the UE capability may include a separateprocessing time from the measurement of L1-RSRP, PMI, CQI, RI, LI,and/or CRI.

Additionally or alternatively, DCI on a PDCCH may indicate the report ofTDCI to a UE 102. A MAC CE may activate the report of TDCI. Additionallyor alternatively, the TDCI may be transmitted on a PUSCH and/or PUCCH.

If periodic CSI reporting including TDCI report is configured, a PUCCHor a PUSCH may be used. If semi-persistent CSI reporting including TDCIreport is configured, a PUCCH or a PUSCH may be used. If aperiodic CSIreporting including TDCI report is configured, a PUSCH or a PUCCH may beused. Periodic, semi-persistent, and/or aperiodic CSI reporting may beconfigured by a parameter in a CSI-ReportConfig.

The UE operations module 124 may provide information 148 to the one ormore receivers 120. For example, the UE operations module 124 may informthe receiver(s) 120 when to receive retransmissions.

The UE operations module 124 may provide information 138 to thedemodulator 114. For example, the UE operations module 124 may informthe demodulator 114 of a modulation pattern anticipated fortransmissions from the gNB 160.

The UE operations module 124 may provide information 136 to the decoder108. For example, the UE operations module 124 may inform the decoder108 of an anticipated encoding for transmissions from the gNB 160.

The UE operations module 124 may provide information 142 to the encoder150. The information 142 may include data to be encoded and/orinstructions for encoding. For example, the UE operations module 124 mayinstruct the encoder 150 to encode transmission data 146 and/or otherinformation 142. The other information 142 may include PDSCH HARQ-ACKinformation.

The encoder 150 may encode transmission data 146 and/or otherinformation 142 provided by the UE operations module 124. For example,encoding the data 146 and/or other information 142 may involve errordetection and/or correction coding, mapping data to space, time and/orfrequency resources for transmission, multiplexing, etc. The encoder 150may provide encoded data 152 to the modulator 154.

The UE operations module 124 may provide information 144 to themodulator 154. For example, the UE operations module 124 may inform themodulator 154 of a modulation type (e.g., constellation mapping) to beused for transmissions to the gNB 160. The modulator 154 may modulatethe encoded data 152 to provide one or more modulated signals 156 to theone or more transmitters 158.

The UE operations module 124 may provide information 140 to the one ormore transmitters 158. This information 140 may include instructions forthe one or more transmitters 158. For example, the UE operations module124 may instruct the one or more transmitters 158 when to transmit asignal to the gNB 160. For instance, the one or more transmitters 158may transmit during a UL subframe. The one or more transmitters 158 mayupconvert and transmit the modulated signal(s) 156 to one or more gNBs160.

Each of the one or more gNBs 160 may include one or more transceivers176, one or more demodulators 172, one or more decoders 166, one or moreencoders 109, one or more modulators 113, a data buffer 162 and a gNBoperations module 182. For example, one or more reception and/ortransmission paths may be implemented in a gNB 160. For convenience,only a single transceiver 176, decoder 166, demodulator 172, encoder 109and modulator 113 are illustrated in the gNB 160, though multipleparallel elements (e.g., transceivers 176, decoders 166, demodulators172, encoders 109 and modulators 113) may be implemented.

The transceiver 176 may include one or more receivers 178 and one ormore transmitters 117. The one or more receivers 178 may receive signalsfrom the UE 102 using one or more physical antennas 180 a-n. Forexample, the receiver 178 may receive and downconvert signals to produceone or more received signals 174. The one or more received signals 174may be provided to a demodulator 172. The one or more transmitters 117may transmit signals to the UE 102 using one or more physical antennas180 a-n. For example, the one or more transmitters 117 may upconvert andtransmit one or more modulated signals 115.

The demodulator 172 may demodulate the one or more received signals 174to produce one or more demodulated signals 170. The one or moredemodulated signals 170 may be provided to the decoder 166. The gNB 160may use the decoder 166 to decode signals. The decoder 166 may produceone or more decoded signals 164, 168. For example, a first eNB-decodedsignal 164 may comprise received payload data, which may be stored in adata buffer 162. A second eNB-decoded signal 168 may comprise overheaddata and/or control data. For example, the second eNB-decoded signal 168may provide data (e.g., PDSCH HARQ-ACK information) that may be used bythe gNB operations module 182 to perform one or more operations.

In general, the gNB operations module 182 may enable the gNB 160 tocommunicate with the one or more UEs 102. The gNB operations module 182may include one or more of a gNB scheduling module 194. The gNBscheduling module 194 may perform scheduling of downlink and/or uplinktransmissions as described herein.

The gNB operations module 182 may provide information 188 to thedemodulator 172. For example, the gNB operations module 182 may informthe demodulator 172 of a modulation pattern anticipated fortransmissions from the UE(s) 102.

The gNB operations module 182 may provide information 186 to the decoder166. For example, the gNB operations module 182 may inform the decoder166 of an anticipated encoding for transmissions from the UE(s) 102.

The gNB operations module 182 may provide information 101 to the encoder109. The information 101 may include data to be encoded and/orinstructions for encoding. For example, the gNB operations module 182may instruct the encoder 109 to encode information 101, includingtransmission data 105.

The encoder 109 may encode transmission data 105 and/or otherinformation included in the information 101 provided by the gNBoperations module 182. For example, encoding the data 105 and/or otherinformation included in the information 101 may involve error detectionand/or correction coding, mapping data to space, time and/or frequencyresources for transmission, multiplexing, etc. The encoder 109 mayprovide encoded data 111 to the modulator 113. The transmission data 105may include network data to be relayed to the UE 102.

The gNB operations module 182 may provide information 103 to themodulator 113. This information 103 may include instructions for themodulator 113. For example, the gNB operations module 182 may inform themodulator 113 of a modulation type (e.g., constellation mapping) to beused for transmissions to the UE(s) 102. The modulator 113 may modulatethe encoded data 111 to provide one or more modulated signals 115 to theone or more transmitters 117.

The gNB operations module 182 may provide information 192 to the one ormore transmitters 117. This information 192 may include instructions forthe one or more transmitters 117. For example, the gNB operations module182 may instruct the one or more transmitters 117 when to (or when notto) transmit a signal to the UE(s) 102. The one or more transmitters 117may upconvert and transmit the modulated signal(s) 115 to one or moreUEs 102.

It should be noted that a DL subframe may be transmitted from the gNB160 to one or more UEs 102 and that a UL subframe may be transmittedfrom one or more UEs 102 to the gNB 160. Furthermore, both the gNB 160and the one or more UEs 102 may transmit data in a standard specialsubframe.

It should also be noted that one or more of the elements or partsthereof included in the eNB(s) 160 and UE(s) 102 may be implemented inhardware. For example, one or more of these elements or parts thereofmay be implemented as a chip, circuitry or hardware components, etc. Itshould also be noted that one or more of the functions or methodsdescribed herein may be implemented in and/or performed using hardware.For example, one or more of the methods described herein may beimplemented in and/or realized using a chipset, an application-specificintegrated circuit (ASIC), a large-scale integrated circuit (LSI) orintegrated circuit, etc.

FIG. 2 shows examples of multiple numerologies 201. As shown in FIG. 2 ,multiple numerologies 201 (e.g., multiple subcarrier spacing) may besupported. For example, μ (e.g., a subcarrier space configuration) and acyclic prefix (e.g., the μ and the cyclic prefix for a carrier bandwidthpart) may be configured by higher layer parameters (e.g., a RRC message)for the downlink and/or the uplink. Here, 15 kHz may be a referencenumerology 201. For example, an RE of the reference numerology 201 maybe defined with a subcarrier spacing of 15 kHz in a frequency domain and2048 Ts+CP length (e.g., 160 Ts or 144 Ts) in a time domain, where Tsdenotes a baseband sampling time unit defined as 1/(15000*2048) seconds.

Additionally or alternatively, a number of OFDM symbol(s) 203 per slot(N_(symb) ^(slot)) may be determined based on the p (e.g., thesubcarrier space configuration). Here, for example, a slot configuration0 (e.g., the number of OFDM symbols 203 per slot may be 14).

FIG. 3 is a diagram illustrating one example of a resource grid 301 andresource block 391 (e.g., for the downlink and/or the uplink). Theresource grid 301 and resource block 391 illustrated in FIG. 3 may beutilized in some implementations of the systems and methods disclosedherein.

In FIG. 3 , one subframe 369 may include N_(symbol) ^(subframe,μ)symbols 387. Additionally or alternatively, a resource block 391 mayinclude a number of resource elements (RE) 389. Here, in the downlink,the OFDM access scheme with cyclic prefix (CP) may be employed, whichmay be also referred to as CP-OFDM. A downlink radio frame may includemultiple pairs of downlink resource blocks (RBs) 391 which are alsoreferred to as physical resource blocks (PRBs). The downlink RB pair isa unit for assigning downlink radio resources, defined by apredetermined bandwidth (RB bandwidth) and a time slot. The downlink RBpair may include two downlink RBs 391 that are continuous in the timedomain. Additionally or alternatively, the downlink RB 391 may includetwelve sub-carriers in frequency domain and seven (for normal CP) or six(for extended CP) OFDM symbols in time domain. A region defined by onesub-carrier in frequency domain and one OFDM symbol in time domain isreferred to as a resource element (RE) 389 and is uniquely identified bythe index pair (k,l), where k and l are indices in the frequency andtime domains, respectively.

Additionally or alternatively, in the uplink, in addition to CP-OFDM, aSingle-Carrier Frequency Division Multiple Access (SC-FDMA) accessscheme may be employed, which is also referred to as Discrete FourierTransform-Spreading OFDM (DFT-S-OFDM). An uplink radio frame may includemultiple pairs of uplink resource blocks 391. The uplink RB pair is aunit for assigning uplink radio resources, defined by a predeterminedbandwidth (RB bandwidth) and a time slot. The uplink RB pair may includetwo uplink RBs 391 that are continuous in the time domain. The uplink RBmay include twelve sub-carriers in frequency domain and seven (fornormal CP) or six (for extended CP) OFDM/DFT-S-OFDM symbols in timedomain. A region defined by one sub-carrier in the frequency domain andone OFDM/DFT-S-OFDM symbol in the time domain is referred to as aresource element (RE) 389 and is uniquely identified by the index pair(k,l) in a slot, where k and l are indices in the frequency and timedomains, respectively.

Each element in the resource grid 301 (e.g., antenna port p) and thesubcarrier configuration μ is called a resource element 389 and isuniquely identified by the index pair (k,l) where k=0, . . . , N_(RB)^(μ)N_(SC) ^(RB)−1 is the index in the frequency domain and l refers tothe symbol position in the time domain. The resource element (k,l) 389on the antenna port p and the subcarrier spacing configuration μ isdenoted (k,l)p,μ. The physical resource block 391 is defined as N_(SC)^(RB)=12 consecutive subcarriers in the frequency domain. The physicalresource blocks 391 are numbered from 0 to N_(RB) ^(μ)−1 in thefrequency domain. The relation between the physical resource blocknumber n_(PRB) in the frequency domain and the resource element (k,l) isgiven by

$n_{PRB} = {\left\lfloor \frac{k}{N_{SC}^{RB}} \right\rfloor.}$

In the NR, the following reference signals may be defined:

-   -   NZP CSI-RS (non-zero power channel state information reference        signal)    -   ZP CSI-RS (Zero-power channel state information reference        signal)    -   DMRS (demodulation reference signal)    -   SRS (sounding reference signal)

NZP CSI-RS may be used for channel tracking (e.g., synchronization),measurement to obtain CSI (CSI measurement including channel measurementand interference measurement), and/or measurement to obtain the beamforming performance. NZP CSI-RS may be transmitted in the downlink (gNBto UE). NZP CSI-RS may be transmitted in an aperiodic or semi-persistentor periodic manner. Additionally, the NZP CSI-RS can be used for radioresource management (RRM) measurement and radio link control (RLM)measurement.

ZP CSI-RS may be used for interference measurement and transmitted inthe downlink (gNB to UE). ZP CSI-RS may be transmitted in an aperiodicor semi-persistent or periodic manner.

DMRS may be used for demodulation for the downlink (gNB to UE), theuplink (UE to gNB), and the sideling (UE to UE).

SRS may be used for channel sounding and beam management. The SRS may betransmitted in the uplink (UE to gNB).

In some approaches, the DCI may be used. The following DCI formats maybe defined:

-   -   DCI format 0_0    -   DCI format 0_1    -   DCI format 0_2    -   DCI format 1_0    -   DCI format 1_1    -   DCI format 1_2    -   DCI format 2_0    -   DCI format 2_1    -   DCI format 2_2    -   DCI format 2_3    -   DCI format 2_4    -   DCI format 2_5    -   DCI format 2_6    -   DCI format 3_0    -   DCI format 3_1

DCI format 1_0 may be used for the scheduling of PUSCH in one cell. TheDCI may be transmitted by means of the DCI format 0_0 with cyclicredundancy check (CRC) scrambled by Cell Radio Network TemporaryIdentifiers (C-RNTI) or Configured Scheduling RNTI (CS-RNTI) orModulation and Coding Scheme-Cell RNTI (MCS-C-RNTI).

DCI format 0_1 may be used for the scheduling of one or multiple PUSCHin one cell, or indicating configured grant downlink feedbackinformation (CG-DFI) to a UE. The DCI may be transmitted by means of theDCI format 0_1 with CRC scrambled by C-RNTI or CS-RNTI orsemi-persistent channel state information (SP-CSI-RNTI) or MCS-C-RNTI.The DCI format 0_2 may be used for CSI request (e.g., aperiodic CSIreporting or semi-persistent CSI request). The DCI format 0_2 may beused for SRS request (e.g., aperiodic SRS transmission).

DCI format 0_2 may be used for the scheduling of PUSCH in one cell. TheDCI may be transmitted by means of the DCI format 0_2 with CRC scrambledby C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI. The DCI format 0_2may be used for scheduling of PUSCH with high priority and/or lowlatency (e.g., URLLC). The DCI format 0_2 may be used for CSI request(e.g., aperiodic CSI reporting or semi-persistent CSI request). The DCIformat 0_2 may be used for SRS request (e.g., aperiodic SRStransmission).

Additionally, for example, the DCI included in the DCI format 0_Y (Y=0,1, 2, . . . ) may be a BWP indicator (e.g., for the PUSCH). Additionallyor alternatively, the DCI included in the DCI format 0_Y may be afrequency domain resource assignment (e.g., for the PUSCH). Additionallyor alternatively, the DCI included in the DCI format 0_Y may be a timedomain resource assignment (e.g., for the PUSCH). Additionally oralternatively, the DCI included in the DCI format 0_Y may be amodulation and coding scheme (e.g., for the PUSCH). Additionally oralternatively, the DCI included in the DCI format 0_Y may be a new dataindicator. Additionally or alternatively, the DCI included in the DCIformat 0_Y may be a TPC command for scheduled PUSCH. Additionally oralternatively, the DCI included in the DCI format 0_Y may be a CSIrequest that is used for requesting the CSI reporting. Additionally oralternatively, as described below, the DCI included in the DCI format0_Y may be information used for indicating an index of a configurationof a configured grant. Additionally or alternatively, the DCI includedin the DCI format 0_Y may be the priority indication (e.g., for thePUSCH transmission and/or for the PUSCH reception).

DCI format 1_0 may be used for the scheduling of PDSCH in one DL cell.The DCI is transmitted by means of the DCI format 1_0 with CRC scrambledby C-RNTI or CS-RNTI or MCS-C-RNTI. The DCI format 1_0 may be used forrandom access procedure initiated by a PDCCH order. Additionally oralternatively, the DCI may be transmitted by means of the DCI format 1_0with CRC scrambled by system information RNTI (SI-RNTI), and the DCI maybe used for system information transmission and/or reception.Additionally or alternatively, the DCI may be transmitted by means ofthe DCI format 1_0 with CRC scrambled by random access RNTI (RA-RNTI)for random access response (RAR) (e.g., Msg 2) or msgB-RNTI for 2-stepRACH. Additionally or alternatively, the DCI may be transmitted by meansof the DCI format 1_0 with CRC scrambled by temporally cell RNTI(TC-RNTI), and the DCI may be used for msg3 transmission by a UE 102.

DCI format 1_1 may be used for the scheduling of PDSCH in one cell. TheDCI may be transmitted by means of the DCI format 1_1 with CRC scrambledby C-RNTI or CS-RNTI or MCS-C-RNTI. The DCI format 1_1 may be used forSRS request (e.g., aperiodic SRS transmission).

DCI format 1_2 may be used for the scheduling of PDSCH in one cell. TheDCI may be transmitted by means of the DCI format 1_2 with CRC scrambledby C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI. The DCI format 1_2may be used for scheduling of PDSCH with high priority and/or lowlatency (e.g., URLLC). The DCI format 1_2 may be used for SRS request(e.g., aperiodic SRS transmission).

Additionally, for example, the DCI included in the DCI format 1_X may bea BWP indicator (e.g., for the PDSCH). Additionally or alternatively,the DCI included in the DCI format 1_X may be frequency domain resourceassignment (e.g., for the PDSCH). Additionally or alternatively, the DCIincluded in the DCI format 1_X may be a time domain resource assignment(e.g., for the PDSCH). Additionally or alternatively, the DCI includedin the DCI format 1_X may be a modulation and coding scheme (e.g., forthe PDSCH). Additionally or alternatively, the DCI included in the DCIformat 1_X may be a new data indicator. Additionally or alternatively,the DCI included in the DCI format 1_X may be a TPC command forscheduled PUCCH. Additionally or alternatively, the DCI included in theDCI format 1_X may be a CSI request that is used for requesting (e.g.,triggering) transmission of the CSI (e.g., CSI reporting (e.g.,aperiodic CSI reporting)). Additionally or alternatively, the DCIincluded in the DCI format 1_X may be a PUCCH resource indicator.Additionally or alternatively, the DCI included in the DCI format 1_Xmay be a PDSCH-to-HARQ feedback timing indicator. Additionally oralternatively, the DCI included in the DCI format 1_X may be thepriority indication (e.g., for the PDSCH transmission and/or the PDSCHreception). Additionally or alternatively, the DCI included in the DCIformat 1_X may be the priority indication (e.g., for the HARQ-ACKtransmission for the PDSCH and/or the HARQ-ACK reception for the PDSCH).

DCI format 2_0 may be used for notifying the slot format, channeloccupancy time (COT) duration for unlicensed band operation, availableresource block (RB) set, and search space group switching. The DCI maytransmitted by means of the DCI format 2_0 with CRC scrambled by slotformat indicator RNTI (SFI-RNTI).

DCI format 2_1 may be used for notifying the physical resource block(s)(PRB(s)) and orthogonal frequency division multiplexing (OFDM) symbol(s)where the UE may assume no transmission is intended for the UE. The DCIis transmitted by means of the DCI format 2_1 with CRC scrambled byinterrupted transmission RNTI (INT-RNTI).

DCI format 2_2 may be used for the transmission of transmission powercontrol (TPC) commands for PUCCH and PUSCH. The following information istransmitted by means of the DCI format 2_2 with CRC scrambled byTPC-PUSCH-RNTI or TPC-PUCCH-RNTI. In a case that the CRC is scrambled byTPC-PUSCH-RNTI, the indicated one or more TPC commands may be applied tothe TPC loop for PUSCHs. In a case that the CRC is scrambled byTPC-PUCCH-RNTI, the indicated one or more TPC commands may be applied tothe TPC loop for PUCCHs.

DCI format 2_3 may be used for the transmission of a group of TPCcommands for SRS transmissions by one or more UEs. Along with a TPCcommand, a SRS request may also be transmitted. The DCI may be istransmitted by means of the DCI format 2_3 with CRC scrambled byTPC-SRS-RNTI.

DCI format 2_4 may be used for notifying the PRB(s) and OFDM symbol(s)where the UE cancels the corresponding UL transmission. The DCI may betransmitted by means of the DCI format 2_4 with CRC scrambled bycancellation indication RNTI (CI-RNTI).

DCI format 2_5 may be used for notifying the availability of softresources for integrated access and backhaul (IAB) operation. The DCImay be transmitted by means of the DCI format 2_5 with CRC scrambled byavailability indication RNTI (AI-RNTI).

DCI format 2_6 may be used for notifying the power saving informationoutside discontinuous reception (DRX) Active Time for one or more UEs.The DCI may transmitted by means of the DCI format 2_6 with CRCscrambled by power saving RNTI (PS-RNTI).

DCI format 3_0 may be used for scheduling of NR physical sidelinkcontrol channel (PSCCH) and NR physical sidelink shared channel (PSSCH)in one cell. The DCI may be transmitted by means of the DCI format 3_0with CRC scrambled by sidelink RNTI (SL-RNTI) or sidelink configuredscheduling RNTI (SL-CS-RNTI). This may be used for vehicular toeverything (V2X) operation for NR V2X UE(s).

DCI format 3_1 may be used for scheduling of LTE PSCCH and LTE PSSCH inone cell. The following information is transmitted by means of the DCIformat 3_1 with CRC scrambled by SL-L-CS-RNTI. This may be used for LTEV2X operation for LTE V2X UE(s).

The UE 102 may monitor one or more DCI formats on common search spaceset (CSS) and/or UE-specific search space set (USS). A set of PDCCHcandidates for a UE to monitor may be defined in terms of PDCCH searchspace sets. A search space set can be a CSS set or a USS set. A UE 102monitors PDCCH candidates in one or more of the following search spacessets. The search space may be defined by a PDCCH configuration in a RRClayer.

A Type0-PDCCH CSS set may be configured by pdcch-ConfigSIB1 in MIB or bysearchSpaceSIB1 in PDCCH-ConfigCommon or by searchSpaceZero inPDCCH-ConfigCommon for a DCI format with CRC scrambled by a SI-RNTI onthe primary cell of the MCG

A Type0A-PDCCH CSS set may be configured bysearchSpaceOtherSystemInformation in PDCCH-ConfigCommon for a DCI formatwith CRC scrambled by a SI-RNTI on the primary cell of the MCG

A Type1-PDCCH CSS set may be configured by ra-SearchSpace inPDCCH-ConfigCommon for a DCI format with CRC scrambled by a RA-RNTI or aTC-RNTI on the primary cell

A Type2-PDCCH CSS set may be configured by pagingSearchSpace inPDCCH-ConfigCommon for a DCI format with CRC scrambled by a P-RNTI onthe primary cell of the MCG

A Type3-PDCCH CSS set may be configured by SearchSpace in PDCCH-Configwith searchSpaceType=common for DCI formats with CRC scrambled byINT-RNTI, SFI-RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, TPC-SRS-RNTI,CI-RNTI, or PS-RNTI and, only for the primary cell, C-RNTI, MCS-C-RNTI,or CS-RNTI(s), and

A USS set may be configured by SearchSpace in PDCCH-Config withsearchSpaceType=ue-Specific for DCI formats with CRC scrambled byC-RNTI, MCS-C-RNTI, SP-CSI-RNTI, CS-RNTI(s), SL-RNTI, SL-CS-RNTI, orSL-L-CS-RNTI.

The UE 102 may monitor a set of candidates of the PDCCH in one or morecontrol resource sets (e.g., CORESETs) on the active DL bandwidth part(BWP) on each activated serving cell according to corresponding searchspace sets. The CORESETs may be configured from gNB 160 to a UE 102, andthe CSS set(s) and the USS set(s) are defined in the configured CORESET.One or more CORESET may be configured in a RRC layer.

FIG. 4 shows examples of resource regions (e.g., resource region of thedownlink). One or more sets 401 of PRB(s) 491 (e.g., a control resourceset (e.g., CORESET)) may be configured for DL control channel monitoring(e.g., the PDCCH monitoring). For example, the CORESET is, in thefrequency domain and/or the time domain, a set 401 of PRBs 491 withinwhich the UE 102 attempts to decode the DCI (e.g., the DCI format(s),the PDCCH(s)), where the PRBs 491 may or may not be frequency contiguousand/or time contiguous, a UE 102 may be configured with one or morecontrol resource sets (e.g., the CORESETs) and one DCI message may bemapped within one control resource set. In the frequency-domain, a PRB491 is the resource unit size (which may or may not include DM-RS) forthe DL control channel.

FIG. 5 illustrates an example of beamforming and quasi-colocation (QCL)type. In NR, the gNB 560 and UE 502 may perform beamforming by havingmultiple antenna elements. The beamforming is operated by using adirectional antenna(s) or applying phase shift for each antenna element(e.g., a high electric field strength to a certain spatial direction canbe achieved). In some examples, the beamforming or beam may be rephrasedby “spatial domain transmission filter” or “spatial domain filter.”

In the downlink, the gNB 560 may apply the transmission beamforming andtransmit the DL channels and/or DL signals and a UE 502 may also applythe reception beamforming and receive the DL channels and/or DL signals.

In the uplink, a UE 560 may apply the transmission beamforming andtransmit the UL channels and/or UL signals and a gNB 560 may also applythe reception beamforming and receive the UL channels and/or UL signals.

The beam correspondence may be defined according to the UE capability.In some examples, the beam correspondence may be defined in accordancewith the following. In the downlink, a UE 502 can decide thetransmission beamforming for UL channels and/or UL signals from thereception beamforming for DL channels and/or DL signals. In the uplink,a gNB 560 can decide the transmission beamforming for DL channels and/orDL signals from the reception beamforming for UL channels and/or ULsignals.

To adaptively switch, refine, or operate beamforming, beam managementmay be performed. For the beam management, NZP-CSI-RS(s) and SRS(s) maybe used to measure the channel quality in the downlink and uplink,respectively. Specifically, in the downlink, gNB 560 may transmit one ormore NZP CSI-RSs. The UE 502 may measure the one or more NZP CSI-RSs. Inaddition, the UE 502 may change the beamforming to receive each NZPCSI-RS. The UE 502 can identify which combination of transmissionbeamforming at gNB side corresponding to NZP CSI-RS corresponding andthe reception beamforming at the UE side. In the uplink, a UE 502 maytransmit one or more SRSs. The gNB 502 measure the one or more SRSs. Inaddition, the gNB 560 may change the reception beamforming to receiveeach SRS. The gNB 560 can identify which combination of transmissionbeamforming at gNB side corresponding to SRS corresponding and thereception beamforming at the gNB side.

To keep the link with transmission beam and reception for thecommunication between a gNB 560 and a UE 502, the quasi-colocation (QCL)assumption may be defined. Two antenna ports are said to be quasico-located if the large-scale properties of the channel over which asymbol on one antenna port is conveyed can be inferred from the channelover which a symbol on the other antenna port is conveyed. Thelarge-scale properties include one or more of delay spread, Dopplerspread, Doppler shift, average gain, average delay, and spatial Rxparameters. The following QCL types may be defined:

-   -   QCL type A (‘QCL-TypeA’): {Doppler shift, Doppler spread,        average delay, delay spread}    -   QCL type B (‘QCL-TypeB’): {Doppler shift, Doppler spread}    -   QCL type C (‘QCL-TypeC’): {Doppler shift, average delay}    -   QCL type D (‘QCL-TypeD’) {Spatial Rx parameter}

QCL type D is related to the beam management. For example, two NZPCSI-RS resources are configured to a UE 502 and a NZP CSI-RS resource #1and a NZP CSI-RS resource #2 are used for beam #1 and beam #2,respectively. At a UE side, Rx beam #1 is used for the reception of theNZP CSI-RS #1 and Rx beam #2 is used for reception of the NZP CSI-RS #2for beam management. Here, the NZP CSI-RS resource #1 and NZP CSI-RSresource #2 imply Tx beam #1 and Tx beam #2, respectively. QCL type Dassumption may be used for PDCCH and PDSCH and DL signals reception.When a UE 502 receives a PDCCH with the QCL type D assumption of NZPCSI-RS #1, the UE 502 may use the Rx beam #2 for the PDCCH reception.

For this purpose, a gNB 560 may configure transmission configurationindication (TCI) states to a UE 502. A TCI state may include thefollowing:

-   -   One or more reference resource indices;    -   QCL type for each of the one or more reference resource indices.

For example, if a TCI state includes QCL type D and NZP CSI-RS #1 andindicated to the UE 502, the UE 502 may apply Rx beam #1 to thereception of a PDCCH, a PDSCH, and/or DL signal(s). In other words, a UE502 can determine the reception beam by using TCI states for receptionof PDCCH, PDSCH, and/or DL signals.

FIG. 6 illustrates an example of transmission configuration indication(TCI) states. The seven TCI states may be configured and one of theconfigured TCI states may be used to receive PDCCH, PDSCH, and/or DLsignals. For example, if gNB 560 indicates TCI state #1, a UE 502 mayassume the PDCCH, PDSCH, and/or DL signals is (are) quasi-colocated withthe NZP CSI-RS corresponding to the NZP CSI-RS resource #1. A UE 502 maydetermine to use the reception beam when the UE 502 receives the NZPCSI-RS corresponding to the NZP CSI-RS resource #1.

Next, how to indicate one TCI state to a UE 502 from gNB 560. In the RRCmessages, N TCI states may be configured by a RRC message. A gNB 560 mayindicate one of the configured TCI states by DCI (e.g., DCI format 1_1or DCI format 1_2). Alternatively or additionally, the gNB 560 mayindicate one of the configured TCI by MAC CE. Alternatively oradditionally, the MAC CE selects more than one TCI states from theconfigured TCI states and DCI indicates one of the more than one TCIstates activated by MAC CE.

FIG. 7 is a flow diagram illustrating an example of a method 700 inaccordance with some of the techniques described herein. In someexamples, the method 700 may be performed by the UE 102 described inrelation to FIG. 1 .

The UE may receive 702 first information to configure one or more CSI-RSfor tracking and second information to configure time domain correlationrelated information. In some examples, this may be performed asdescribed in relation to FIG. 1 .

The UE may transmit 704 a CSI report including the time domaincorrelation related information. A first parameter trs-Info may beincluded in the first information. A second parameter reportQuantity maynot be set to ‘none’. The time domain correlation related informationmay be measured by the one or more CSI-RS for tracking. In someexamples, this may be performed as described in relation to FIG. 1 .

FIG. 8 is a flow diagram illustrating an example of a method 800 inaccordance with some of the techniques described herein. In someexamples, the method 800 may be performed by the gNB 160 described inrelation to FIG. 1 .

The gNB may transmit 802 first information to configure one or moreCSI-RS for tracking and second information to configure time domaincorrelation related information. In some examples, this may be performedas described in relation to FIG. 1 .

The gNB may receive 804 a CSI report including the time domaincorrelation related information. A first parameter trs-Info may beincluded in the first information. A second parameter reportQuantity maynot be set to ‘none’. The time domain correlation related informationmay be measured by the one or more CSI-RS for tracking. In someexamples, this may be performed as described in relation to FIG. 1 .

FIG. 9A is a flow diagram illustrating an example of a method 900 a inaccordance with some of the techniques described herein. In someexamples, the method 900 a may be performed by the UE 102 described inrelation to FIG. 1 .

The UE may receive 902 a first information to configure one or moreCSI-RS for tracking and second information to configure time domaincorrelation related information. In some examples, this may be performedas described in relation to FIG. 1 .

The UE may transmit 904 a a CSI report including the time domaincorrelation related information. A first parameter trs-Info may beincluded in the first information. A second parameter may indicate oneof a periodic CSI report, semi-persistent CSI report, and aperiodic CSIreport. The time domain correlation related information may be measuredby the one or more CSI-RS for tracking. The CSI report including thetime domain correlation related information may be transmitted based onthe second parameter. In some examples, this may be performed asdescribed in relation to FIG. 1 .

FIG. 9B is a flow diagram illustrating an example of a method 900 b inaccordance with some of the techniques described herein. In someexamples, the method 900 b may be performed by the gNB 160 described inrelation to FIG. 1 .

The gNB may transmit 902 b first information to configure one or moreCSI-RS for tracking and second information to configure time domaincorrelation related information. In some examples, this may be performedas described in relation to FIG. 1 .

The gNB may receive 904 b a CSI report including the time domaincorrelation related information. A first parameter trs-Info may beincluded in the first information. A second parameter may indicate oneof periodic CSI report, semi-persistent CSI report, and aperiodic CSIreport. The time domain correlation related information may be measuredby the one or more CSI-RS for tracking. The CSI report including thetime domain correlation related information may be received based on thesecond parameter. In some examples, this may be performed as describedin relation to FIG. 1 .

FIG. 10 illustrates various components that may be utilized in a UE1002. The UE 1002 described in connection with FIG. 10 may beimplemented in accordance with the UE 102 described in connection withFIG. 1 . The UE 1002 includes a processor 1003 that controls operationof the UE 1002. The processor 1003 may also be referred to as a centralprocessing unit (CPU). Memory 1005, which may include read-only memory(ROM), random access memory (RAM), a combination of the two or any typeof device that may store information, provides instructions 1007 a anddata 1009 a to the processor 1003. A portion of the memory 1005 may alsoinclude non-volatile random access memory (NVRAM). Instructions 1007 band data 1009 b may also reside in the processor 1003. Instructions 1007b and/or data 1009 b loaded into the processor 1003 may also includeinstructions 1007 a and/or data 1009 a from memory 1005 that were loadedfor execution or processing by the processor 1003. The instructions 1007b may be executed by the processor 1003 to implement the methodsdescribed herein.

The UE 1002 may also include a housing that contains one or moretransmitters 1058 and one or more receivers 1020 to allow transmissionand reception of data. The transmitter(s) 1058 and receiver(s) 1020 maybe combined into one or more transceivers 1018. One or more antennas1022 a-n are attached to the housing and electrically coupled to thetransceiver 1018.

The various components of the UE 1002 are coupled together by a bussystem 1011, which may include a power bus, a control signal bus and astatus signal bus, in addition to a data bus. However, for the sake ofclarity, the various buses are illustrated in FIG. 10 as the bus system1011. The UE 1002 may also include a digital signal processor (DSP) 1013for use in processing signals. The UE 1002 may also include acommunications interface 1015 that provides user access to the functionsof the UE 1002. The UE 1002 illustrated in FIG. 10 is a functional blockdiagram rather than a listing of specific components.

FIG. 11 illustrates various components that may be utilized in a gNB1160. The gNB 1160 described in connection with FIG. 11 may beimplemented in accordance with the gNB 160 described in connection withFIG. 1 . The gNB 1160 includes a processor 1103 that controls operationof the gNB 1160. The processor 1103 may also be referred to as a centralprocessing unit (CPU). Memory 1105, which may include read-only memory(ROM), random access memory (RAM), a combination of the two or any typeof device that may store information, provides instructions 1107 a anddata 1109 a to the processor 1103. A portion of the memory 1105 may alsoinclude non-volatile random access memory (NVRAM). Instructions 1107 band data 1109 b may also reside in the processor 1103. Instructions 1107b and/or data 1109 b loaded into the processor 1103 may also includeinstructions 1107 a and/or data 1109 a from memory 1105 that were loadedfor execution or processing by the processor 1103. The instructions 1107b may be executed by the processor 1103 to implement the methodsdescribed herein.

The gNB 1160 may also include a housing that contains one or moretransmitters 1117 and one or more receivers 1178 to allow transmissionand reception of data. The transmitter(s) 1117 and receiver(s) 1178 maybe combined into one or more transceivers 1176. One or more antennas1180 a-n are attached to the housing and electrically coupled to thetransceiver 1176.

The various components of the gNB 1160 are coupled together by a bussystem 1111, which may include a power bus, a control signal bus and astatus signal bus, in addition to a data bus. However, for the sake ofclarity, the various buses are illustrated in FIG. 11 as the bus system1111. The gNB 1160 may also include a digital signal processor (DSP)1113 for use in processing signals. The gNB 1160 may also include acommunications interface 1115 that provides user access to the functionsof the gNB 1160. The gNB 1160 illustrated in FIG. 11 is a functionalblock diagram rather than a listing of specific components.

FIG. 12 is a block diagram illustrating one implementation of a UE 1202in which one or more of the systems and/or methods described herein maybe implemented. The UE 1202 includes transmit means 1258, receive means1220 and control means 1224. The transmit means 1258, receive means 1220and control means 1224 may be configured to perform one or more of thefunctions described in connection with FIG. 1 above. FIG. 10 aboveillustrates one example of a concrete apparatus structure of FIG. 12 .Other various structures may be implemented to realize one or more ofthe functions of FIG. 1 . For example, a DSP may be realized bysoftware.

FIG. 13 is a block diagram illustrating one implementation of a gNB 1360in which one or more of the systems and/or methods described herein maybe implemented. The gNB 1360 includes transmit means 1317, receive means1378 and control means 1382. The transmit means 1317, receive means 1378and control means 1382 may be configured to perform one or more of thefunctions described in connection with FIG. 1 above. FIG. 11 aboveillustrates one example of a concrete apparatus structure of FIG. 13 .Other various structures may be implemented to realize one or more ofthe functions of FIG. 1 . For example, a DSP may be realized bysoftware.

FIG. 14 is a block diagram illustrating one implementation of a gNB1460. The gNB 1460 may be an example of the gNB 160 described inconnection with FIG. 1 . The gNB 1460 may include a higher layerprocessor 1423, a DL transmitter 1425, a UL receiver 1433, and one ormore antenna 1431. The DL transmitter 1425 may include a PDCCHtransmitter 1427 and a PDSCH transmitter 1429. The UL receiver 1433 mayinclude a PUCCH receiver 1435 and a PUSCH receiver 1437.

The higher layer processor 1423 may manage physical layer's behaviors(the DL transmitter's and the UL receiver's behaviors) and providehigher layer parameters to the physical layer. The higher layerprocessor 1423 may obtain transport blocks from the physical layer. Thehigher layer processor 1423 may send/acquire higher layer messages suchas an RRC message and MAC message to/from a UE's higher layer. Thehigher layer processor 1423 may provide the PDSCH transmitter transportblocks and provide the PDCCH transmitter transmission parameters relatedto the transport blocks.

The DL transmitter 1425 may multiplex downlink physical channels anddownlink physical signals (including reservation signal) and transmitthem via transmission antennas 1431. The UL receiver 1433 may receivemultiplexed uplink physical channels and uplink physical signals viareceiving antennas 1431 and de-multiplex them. The PUCCH receiver 1435may provide the higher layer processor 1423 UCI. The PUSCH receiver 1437may provide the higher layer processor 1423 received transport blocks.

FIG. 15 is a block diagram illustrating one implementation of a UE 1502.The UE 1502 may be an example of the UE 102 described in connection withFIG. 1 . The UE 1502 may include a higher layer processor 1523, a ULtransmitter 1551, a DL receiver 1543, and one or more antenna 1531. TheUL transmitter 1551 may include a PUCCH transmitter 1553 and a PUSCHtransmitter 1555. The DL receiver 1543 may include a PDCCH receiver 1545and a PDSCH receiver 1547.

The higher layer processor 1523 may manage physical layer's behaviors(the UL transmitter's and the DL receiver's behaviors) and providehigher layer parameters to the physical layer. The higher layerprocessor 1523 may obtain transport blocks from the physical layer. Thehigher layer processor 1523 may send/acquire higher layer messages suchas an RRC message and MAC message to/from a UE's higher layer. Thehigher layer processor 1523 may provide the PUSCH transmitter transportblocks and provide the PUCCH transmitter 1553 UCI.

The DL receiver 1543 may receive multiplexed downlink physical channelsand downlink physical signals via receiving antennas 1531 andde-multiplex them. The PDCCH receiver 1545 may provide the higher layerprocessor 1523 DCI. The PDSCH receiver 1547 may provide the higher layerprocessor 1523 received transport blocks.

The term “computer-readable medium” refers to any available medium thatcan be accessed by a computer or a processor. The term“computer-readable medium,” as used herein, may denote a computer-and/or processor-readable medium that is non-transitory and tangible. Byway of example and not limitation, a computer-readable orprocessor-readable medium may comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code in the form of instructions or data structures and that canbe accessed by a computer or processor. Disk and disc, as used herein,includes compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray® disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.

It should be noted that one or more of the methods described herein maybe implemented in and/or performed using hardware. For example, one ormore of the methods described herein may be implemented in and/orrealized using a chipset, an application-specific integrated circuit(ASIC), a large-scale integrated circuit (LSI) or integrated circuit,etc.

Each of the methods disclosed herein comprises one or more steps oractions for achieving the described method. The method steps and/oractions may be interchanged with one another and/or combined into asingle step without departing from the scope of the claims. In otherwords, unless a specific order of steps or actions is required forproper operation of the method that is being described, the order and/oruse of specific steps and/or actions may be modified without departingfrom the scope of the claims.

It is to be understood that the claims are not limited to the preciseconfiguration and components illustrated above. Various modifications,changes and variations may be made in the arrangement, operation anddetails of the systems, methods and apparatus described herein withoutdeparting from the scope of the claims.

A program running on the gNB 160 or the UE 102 according to thedescribed systems and methods is a program (a program for causing acomputer to operate) that controls a CPU and the like in such a manneras to realize the function according to the described systems andmethods. Then, the information that is handled in these apparatuses istemporarily stored in a RAM while being processed. Thereafter, theinformation is stored in various ROMs or HDDs, and whenever necessary,is read by the CPU to be modified or written. As a recording medium onwhich the program is stored, among a semiconductor (for example, a ROM,a nonvolatile memory card, and the like), an optical storage medium (forexample, a DVD, a MO, a MD, a CD, a BD and the like), a magnetic storagemedium (for example, a magnetic tape, a flexible disk and the like) andthe like, any one may be possible. Furthermore, in some cases, thefunction according to the described systems and methods described hereinis realized by running the loaded program, and in addition, the functionaccording to the described systems and methods is realized inconjunction with an operating system or other application programs,based on an instruction from the program.

Furthermore, in a case where the programs are available on the market,the program stored on a portable recording medium can be distributed orthe program can be transmitted to a server computer that connectsthrough a network such as the Internet. In this case, a storage devicein the server computer also is included. Furthermore, some or all of thegNB 160 and the UE 102 according to the systems and methods describedherein may be realized as an LSI that is a typical integrated circuit.Each functional block of the gNB 160 and the UE 102 may be individuallybuilt into a chip, and some or all functional blocks may be integratedinto a chip. Furthermore, a technique of the integrated circuit is notlimited to the LSI, and an integrated circuit for the functional blockmay be realized with a dedicated circuit or a general-purpose processor.Furthermore, if with advances in a semiconductor technology, atechnology of an integrated circuit that substitutes for the LSIappears, it is also possible to use an integrated circuit to which thetechnology applies.

Moreover, each functional block or various features of the base stationdevice and the terminal device used in each of the aforementionedembodiments may be implemented or executed by a circuitry, which istypically an integrated circuit or a plurality of integrated circuits.The circuitry designed to execute the functions described in the presentspecification may comprise a general-purpose processor, a digital signalprocessor (DSP), an application specific or general applicationintegrated circuit (ASIC), a field programmable gate array (FPGA), orother programmable logic devices, discrete gates or transistor logic, ora discrete hardware component, or a combination thereof. Thegeneral-purpose processor may be a microprocessor, or alternatively, theprocessor may be a conventional processor, a controller, amicrocontroller, or a state machine. The general-purpose processor oreach circuit described herein may be configured by a digital circuit ormay be configured by an analogue circuit. Further, when a technology ofmaking into an integrated circuit superseding integrated circuits at thepresent time appears due to advancement of a semiconductor technology,the integrated circuit by this technology is also able to be used.

As used herein, the term “and/or” should be interpreted to mean one ormore items. For example, the phrase “A, B and/or C” should beinterpreted to mean any of: only A, only B, only C, A and B (but not C),B and C (but not A), A and C (but not B), or all of A, B, and C. As usedherein, the phrase “at least one of” should be interpreted to mean oneor more items. For example, the phrase “at least one of A, B and C” orthe phrase “at least one of A, B or C” should be interpreted to mean anyof: only A, only B, only C, A and B (but not C), B and C (but not A), Aand C (but not B), or all of A, B, and C. As used herein, the phrase“one or more of” should be interpreted to mean one or more items. Forexample, the phrase “one or more of A, B and C” or the phrase “one ormore of A, B or C” should be interpreted to mean any of: only A, only B,only C, A and B (but not C), B and C (but not A), A and C (but not B),or all of A, B, and C.

1. A user equipment (UE) comprising: receiving circuitry configured to receive first information to configure one or more channel state information-reference signals (CSI-RS) for tracking and second information to configure time domain correlation related information; and transmitting circuitry configured to transmit a channel state information (CSI) report including the time domain correlation related information, wherein: a first parameter trs-Info is included in the first information, a second parameter reportQuantity is not set to ‘none’, and the time domain correlation related information is measured by the one or more CSI-RS for tracking.
 2. A base station comprising: transmitting circuitry configured to transmit first information to configure one or more channel state information-reference signals (CSI-RS) for tracking and second information to configure time domain correlation related information; and receiving circuitry configured to receive a channel state information (CSI) report including the time domain correlation related information, wherein: a first parameter trs-Info is included in the first information, a second parameter reportQuantity is not set to ‘none’, and the time domain correlation related information is measured by the one or more CSI-RS for tracking.
 3. A communication method of a user equipment (UE) comprising: receiving first information to configure one or more channel state information-reference signals (CSI-RS) for tracking and second information to configure time domain correlation related information; and transmitting a channel state information (CSI) report including the time domain correlation related information, wherein: a first parameter trs-Info is included in the first information, a second parameter reportQuantity is not set to ‘none’, and the time domain correlation related information is measured by the one or more CSI-RS for tracking.
 4. A communication method of a base station apparatus comprising: transmitting first information to configure one or more channel state information-reference signals (CSI-RS) for tracking and second information to configure time domain correlation related information; and receiving a channel state information (CSI) report including the time domain correlation related information, wherein: a first parameter trs-Info is included in the first information, a second parameter reportQuantity is not set to ‘none’, and the time domain correlation related information is measured by the one or more CSI-RS for tracking. 